Fix Storybook testing: clickMe.click is not a function

[melvincarvalho]

Summary

Fixes the clickMe.click is not a function error in Storybook when rendering Tabs stories (particularly the selectedTab story).

Problem

In src/tabs.ts, the code calls .click() on firstChild without checking if it's actually an element with a click method:

const clickMe = tab.firstChild
// @ts-ignore
if (clickMe) clickMe.click()

firstChild returns ChildNode | null, which could be a Text node or Comment node (no .click() method). The @ts-ignore masked the TypeScript error but crashed at runtime.

Solution

Replace the unsafe code with proper type checking:

const clickMe = tab.firstChild as HTMLElement | null
if (clickMe?.click) clickMe.click()

Fixes

Closes #490

Testing

• All existing tests pass
• Storybook Tabs stories now render without error